15e4d14dfa
These offer a simpler and more efficient means for temporarily
transitioning to CPU-accessible memory for fallback implementations.
v2: Do not attempt fallbacks with GLAMOR_DRM_ONLY pixmaps
glamor cannot transfer pixels for GLAMOR_DRM_ONLY pixmaps using
glReadPixels and glTexSubImage2D, and so there's no way to perform
fallback operations with these pixmaps.
v3: Clear ->pbo field when deleting the PBO. Otherwise, we'd reuse
the old name next time we fall back on the pixmap, which would
potentially conflict with some other pixmap that genned a new
name, or just do a lazy allocation of the name (compat GL context,
like we currently use) or error out (core GL context, like we hope
to use some day). Also, style fixes. Changes by anholt, acked by
keithp.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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* Copyright © 1998 Keith Packard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Zhigang Gong <zhigang.gong@gmail.com>
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*
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*/
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#include <stdlib.h>
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#include "glamor_priv.h"
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#include "mipict.h"
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/* Upload picture to texture. We may need to flip the y axis or
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* wire alpha to 1. So we may conditional create fbo for the picture.
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* */
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enum glamor_pixmap_status
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glamor_upload_picture_to_texture(PicturePtr picture)
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{
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PixmapPtr pixmap;
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assert(picture->pDrawable);
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pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
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return glamor_upload_pixmap_to_texture(pixmap);
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}
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/*
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* We should already have drawable attached to it, if it has one.
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* Then set the attached pixmap to is_picture format, and set
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* the pict format.
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* */
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int
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glamor_create_picture(PicturePtr picture)
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{
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PixmapPtr pixmap;
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glamor_pixmap_private *pixmap_priv;
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if (!picture || !picture->pDrawable)
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return 0;
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pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (!pixmap_priv) {
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/* We must create a pixmap priv to track the picture format even
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* if the pixmap is a pure in memory pixmap. The reason is that
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* we may need to upload this pixmap to a texture on the fly. During
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* the uploading, we need to know the picture format. */
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glamor_set_pixmap_type(pixmap, GLAMOR_MEMORY);
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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}
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else {
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if (GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
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/* If the picture format is not compatible with glamor fbo format,
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* we have to mark this pixmap as a separated texture, and don't
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* fallback to DDX layer. */
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if (pixmap_priv->type == GLAMOR_TEXTURE_DRM
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&& !glamor_pict_format_is_compatible(picture))
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glamor_set_pixmap_type(pixmap, GLAMOR_SEPARATE_TEXTURE);
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}
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}
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pixmap_priv->base.is_picture = 1;
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pixmap_priv->base.picture = picture;
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return miCreatePicture(picture);
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}
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void
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glamor_destroy_picture(PicturePtr picture)
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{
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PixmapPtr pixmap;
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glamor_pixmap_private *pixmap_priv;
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if (!picture || !picture->pDrawable)
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return;
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pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (pixmap_priv) {
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pixmap_priv->base.is_picture = 0;
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pixmap_priv->base.picture = NULL;
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}
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miDestroyPicture(picture);
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}
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void
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glamor_picture_format_fixup(PicturePtr picture,
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glamor_pixmap_private *pixmap_priv)
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{
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pixmap_priv->base.picture = picture;
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}
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